Liquid containment vessel



FIG. 1 is a right front perspective view of a liquid containment vessel;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a rear view thereof. 

The ornamental design for a liquid containment vessel, as shown and described. 